simultaneous X and PERP snap line to curve?

 From:  brash
5767.4 In reply to 5767.3 
Thanks PILOU and Michael!

In circle it is easy from Cen to y-direction. How about curve without center?

EDITED: 14 Mar 2013 by BRASH

Image Attachments:
Size: 185.7 KB, Downloaded: 18 times, Dimensions: 1063x619px
Size: 199.7 KB, Downloaded: 32 times, Dimensions: 1093x641px
Size: 151.2 KB, Downloaded: 17 times, Dimensions: 1063x661px
Size: 173.6 KB, Downloaded: 24 times, Dimensions: 1163x653px
Size: 161 KB, Downloaded: 22 times, Dimensions: 1133x619px
Size: 189.1 KB, Downloaded: 25 times, Dimensions: 1153x705px
Size: 171.4 KB, Downloaded: 34 times, Dimensions: 1155x645px